Introduction-to-wide-area-networks

Introduction to wide area networks

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So what, exactly, is it makes something a wide area network (WAN) instead of a local area...
Wireless Implementation Guidelines

Wireless Implementation Guidelines

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As we have an article for the overview of the wireless security considerations, let’s talk about planning...
Wireless-security-and-Implementation-considerations

Wireless security and Implementation considerations

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Understanding the threatsIntroducing wireless networking into your organization opens the door to three new...
802.11-standards-family

The 802.11 standards family

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Now that you have a foundational understanding of RF signals, we can move to the 802.11 standards....
Cisco-wireless-technology

Cisco’s Wireless Technologies

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The funny thing about wireless LAN (WLANs) is that the topology was just so cool that network...
Enabling-Internet-connectivity-with-NAT

Enabling Internet connectivity with NAT

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We can still remember the very first time we saw Network Address Translation (NAT) in action. “This...
context based access controla

Context-based Access Control (Cisco IOS Firewall)

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You’ve got to have the Cisco IOS firewall set in the IOS to make use of Context-based Access...
Advanced Access lists - CCNA Course

Advanced Access lists – CCNA Course

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In this article, we are going to show you some more advanced ways to use access lists....
extended-access-lists-ccna-course

Extended Access Lists – CCNA Course

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In the standard IP access list example, you can notice how you have to block all access...
standard access lists ccna course

Standard Access Lists – CCNA Course

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Standard IP access lists filter network traffic by examining the source IP address in a packet. You create...
Introduction to Access Lists

Introduction to Access Lists

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An Access list is essentially a list of conditions that categorize packets. They can really help when...
Configuring VLAN Trunking Protocol ccna course

Configuring VLAN Trunking Protocol (VTP)

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All Cisco switches are configured to be VTP servers by default. To configure VTP, first, you have...
Configuring voice VLANs

Configuring voice VLANs – CCNA Course

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The voice VLAN feature enables access ports to carry IP voice traffic from an IP phone. When a...
configuring inter vlan routing

Configuring Inter-VLAN Routing

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By default, only hosts that are members of the same VLAN can communicate. To change this and...
Configuring Virtual Local Area Networks (VLANs)

Configuring Virtual Local Area Networks (VLANs)

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It may come as surprise to you, but configuring VLANs is actually pretty easy. Figuring out which...
vlan identification methods

VLAN Identification Methods – CCNA Course

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Most of the time, VLANs are created by a sys admin who proceeds to assign switch ports...
introduction to virtual area network vlan

Introduction to Virtual Local Area Network (VLAN)

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The following figure shows how layer 2 switched networks are typically designed as flat networks. With this configuration,...
troubleshooting basic switch connectivity

Troubleshooting Basic Switch Connectivity – CCNA Course

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As always, when troubleshooting connectivity issues, use a layered approach and eliminate possibilities at each layer to...
enhancements to stp

Enhancements to Spanning Tree Protocol (STP)

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The 802.1d spanning tree protocol was created with very few design flaws; however, as with most great...
initial switch configurations

Initial Switch Configurations – CCNA Course

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Catalyst switches, for the most part, are designed so that the default state of the switch allows...
layer 2 switching and stp

Layer 2 Switching and Spanning Tree Protocol (STP)

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We already have an article “Datalink networking concepts”, that you can use bridges and switches to segment...
eigrp configurations

EIGRP Configuration – CCNA Course

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One of the greatest aspects of EIGRP is that you get all this advanced functionality with minimal...
balanced hybrid operations eigrp

Balanced Hybrid operations – CCNA Course

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Balanced hybrid routing protocols are sometimes called advanced distance vector routing protocols. The rationale behind this logic...
configuring ospf with sdm

Configuring OSPF with SDM

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With all these configurations we have learned in our previous article for OSPF we have encountered so...
introduction to configuring ospf

Introduction to configuring OSPF – CCNA Course

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One of the first steps you should take when configuring OSPF is to configure loopback interfaces to...
open shortest path first ccna course

Open Shortest Path First (OSPF) – CCNA Course

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The most widely used link-state routing protocols today is an IETF standard routing protocol called Open Short...
Link state and hybrid routing protocol

Link State and Hybrid Routing Protocols

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Distance vector routing protocols are ideal for small networks that have routers with slow processing power and...
conifiguring RIP with sdm

Configuring RIP with SDM – CCNA Course

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RIP configuration using SDM are relatively similar and just as easy as configuring default and static routes....
distance vector routing protocol

Distance vector routing protocols

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The preceding chapter looked at distance vector routing protocols from a sort of high altitude overview. This...
route summerization in cisco networking

Route summarization in Cisco Networking

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As already mentioned, classful routing protocols automatically summarized networks to the classful subnet boundaries. Classless routing protocols,...